A song that wakes up people and tells the story of the century-old history of credit shops. At the end of the Qing Dynasty, there was a huge town on land and water, with ships in the south and horses in the north, business gangs ups and downs, and undercurrents in the rivers and lakes. The cold-faced scholar Shen Xiaonong stays upright, and the calligraphy beauty Bai Xiuzhu pursues innovation, and together they protect the fire of Yongsheng Book Club. A banned legend stirred up business turmoil, emotional entanglements and the persistence of artistic souls. See how the old tune and the new rhyme can survive the desperate situation, the taste is so refreshing that the spirit of the book is still lingering, and the lights are always bright. When you open the book, you can see the glory of the late Qing Dynasty. When you close the book, you can still hear the sound of Pan Zhaohe.